Job Offers

"Tweeting Growers"

Top 5 -yesterday

Top 5 -last week

Top 5 -last month

Nutrient monitoring of vinca

Vinca require low fertility levels between 100 and 150 ppm N. Low fertility results in chlorotic (yellow) stunted plants with an upright leaf orientation. Optimal substrate pH values range from 5.5 to 5.8. If the substrate pH drifts <5.5, iron (Fe) and manganese can accumulate at toxic levels and observed as lower leaf black spotting. Substrate pH values >6.5 inhibit Fe uptake, leading to symptoms of interveinal chlorosis and bleaching (whitening) on the upper leaves.

Read more at e-GRO (W. Garrett Owen, Josh Henry, Brian E. Whipker)

Publication date:

Receive the daily newsletter in your email for free | Click here

Other news in this sector:

© 2021

Sign up for our daily Newsletter and stay up to date with all the latest news!

Subscribe I am already a subscriber